Boot sole



FIG. 1 is a bottom perspective view of a boot sole.

FIG. 2 is a front view of the boot sole.

FIG. 3 is a rear view of the boot sole.

FIG. 4 is a right side view of the boot sole.

FIG. 5 is a left side view of the boot sole.

FIG. 6 is a view showing the boot sole as visible from the top; and,

FIG. 7 is a bottom view of the boot sole.

The broken lines depicting the boot are to illustrate unclaimed environmental structure, and the broken lines seen on the boot sole are for purposes of depicting portions that form no part of the claimed design. 

CLAIM The ornamental design for a boot sole, as shown and described. 